As another high school football season closes with state champions being crowned across the country, an unofficial second season kicks off. December marks the start of all-star season, with games pitting the best players from coast to coast. Here's a look at some of the nation's top all-star events being held over the next month.

Alabama-Mississippi All-Star Classic

When: Dec. 11
Where: Mobile, Ala.
Who: Alabama vs. Mississippi (24th annual meeting)
Why you should care: This game has produced numerous NFL stars such as Cadillac Williams, Rolando McClain, Jason Campbell and Deuce McAllister. Current college stars Nick Fairley, Vick Ballard and Chad Bumphis also participated in this annual event. This year's event is highlighted by Brent Calloway and Jonathan Rose, the top two players in Alabama. The Mississippi squad has its own star power with Nickalos Brassell and Tobias Singleton, the Nos. 1 and 3 players, respectively, in the state.

When: Dec. 31
Where: Charleston, S.C.
Who: Players from all over the United States, Canada and one each from Australia and Croatia.
Why you should care: This is the first annual event for the National Underclassmen Combine organization, which is the leader in football camps held nationally for high school players of all ages. This year's inaugural event has current Rivals.com Top250 stars Damiere Byrd (South Carolina), Vance Roberts (West Virginia), Amarlo Herrera (Georgia), Jabari Hunt-Days (Georgia Tech), and Kenny Williams (Texas Tech).

Offense-Defense Bowl

When: Dec. 31
Where: Myrtle Beach, S.C.
Who: Top prospects from around the country
Why you should care: Plenty of Rivals100 talent on display including Georgia-bound quarterback Christian Lemay's first appearance since he was suspended for his senior year, athlete Ladarius Brown, running back Marlin Lane (Clemson), running back Justice Hayes (Michigan), defensive lineman Kenny Hayes (Ohio State) and tight end Eric MacLain (Clemson).

Under Armour All-America Game

When: Jan. 5
Where: St. Petersburg, Fla.
Who: Top prospects from around the nation
Why you should care: The nation's No. 1 player, defensive end Jadeveon Clowney, leads a loaded roster for the annual event held at Tropicana Field. Other five-star prospects in the game include offensive tackles La'El Collins and Cyrus Kouandjio, as well as safety Hasean Clinton-Dix.

When: Jan. 8
Where: San Antonio, Texas
Who: Top prospects from around the nation, East vs. West
Why you should care: Four top-ranked players at their position - defensive tackle Michael Bennett, inside linebacker Curtis Grant, strongside defensive end Stephon Tuitt and athlete James Wilder Jr. - lead the East. The West's offense is especially impressive with running back Malcolm Brown and wide receiver George Farmer, each No. 1 at their position, and a strong offensive line leading the way. This is the premier all-star event in the offseason.